The Whitewater River Run from Shelter Cove Road to the Junction with Main Stem in Section 9, T4S, R1E, HM in California is a popular destination for whitewater enthusiasts. The ideal streamflow range for this segment is between 500-2500 cfs, which provides a thrilling and challenging experience. The class rating for this run is Class III-V, which requires advanced to expert level skills.

The segment mileage for this run is approximately 7 miles, and it is characterized by several challenging rapids and obstacles, including the Super Slide, the Toilet Bowl, and the S-Turn. The Super Slide is a long, steep drop that requires precise maneuvering, while the Toilet Bowl is a hole that can capsize boats if not navigated correctly. The S-Turn consists of a series of tight turns that require quick reflexes and precise steering.

To ensure the safety of all participants, there are specific regulations in place for this area. All participants must have appropriate safety gear, including helmets and personal flotation devices. Additionally, all participants must follow Leave No Trace principles to protect the natural environment and to maintain the area's pristine condition.

Overall, the Whitewater River Run from Shelter Cove Road to the Junction with Main Stem in Section 9, T4S, R1E, HM in California is a challenging and exciting destination for experienced whitewater enthusiasts. With its challenging rapids, specific regulations, and stunning natural beauty, it is a must-visit destination for anyone looking for an adrenaline-fueled adventure.